Funnel



(No Model.) A. B. PRATT.

PUNNEL.

10.281,727. Patentedmlulyzl, 1883.

versant with such matters from the following Y UNITED STATES PATENT OFFICE.

`AARON B. PRATT, OF CAMBRIDGE, MASSACHSETTS.

FUNNEL.

SPECIFICATION forming part of Letters Patent No. 281,727, dated July,24, 1883.

v Application filed January 19, 1383. (No model.)

To a/ZZ whom it may concern.-

- Be it known that I, AARON B. Enma-0f' ing parts in the different figures of the draw- 4 ings.

My invention relates to that class of tunnels which are provided with vents; and it consists in a novel construction and arrangement of the parts, as hereinafter Inore fully set forth and claimed, by which a more effective device of this character is produced than is now in ordinary use.

The nature and operation of the improvement will be readily understood by all conexplanation, its extreme simplicity rendering an .elaborate description unnecessary.

In the drawings, A represents the body of the tunnel7 and B the sleeve. The body may be composed of tin or anysuitable material and is of" the ordinary construction. The

sleeve is secured at its upper end to the lower part of the body A, and is foraminous or provided with a series of perforations, z, the sleeve being arranged in such a manner as to leave a space, m, on allV sides between it andthe nozzle C, Which is preferably slightly longer than 4o the sleeve, as shown at d. l

In the use of my improvement the nozzle and its sleeveV are placed in the neck of the bottle or aperture in the vessel to be filled,and as the filling takes place the air passes out of the same through the. space m and perforaA tions as.

In many ventilatingetunnels the ventilati ngtube is so constructed and arranged that the fluid is liable to rise and cover its lower end, thereby preventing ventilation, an objection which my improvement is designed to obviate, for, when the fluid attains a height above the lower end of the sleeve, the air passes out of the vessel being filled through the perforations in a Inanner which will be readily understood without an explicit description.

The sleeve being arranged equidistant from the nozzle on all sides, also Yserves to keep the tunnel in proper position while in use.

By having the end d of the nozzle project below the sleeve, the tunnel may be used in filling smaller vessels, and steadied by resting the lower end of the sleeve on the top of the vessel being filled.

Having thus explained my invention, what I claim is- A tunnel having the body A, nozzle C, and sleeve B, the sleeve being slightly shorter than the nozzle, and provided with a series of perforations, 5v, nearly its entire length, which open into the annular airspace m between the sleeve and nozzle, so that when the lower perforations are covered the air will escape through those above the level of the fluid, substantially as set forth and described.

AARON B. PRATT.

v Witnesses:

L. J. WHITE, G. A. SHAW. 

